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Finding the Fourth Proportional to 69,325.67, 103,991.09 and 19,404.47

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Solution

The fourth proportional to 69,325.67, 103,991.09 and 19,404.47 is: 29,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,325.67 : 103,991.09 = 19,404.47 : x
  2. Step 2: Convert to fraction form
    69,325.67/103,991.09 = 19,404.47/x
  3. Step 3: Cross multiply
    69,325.67x = 103,991.09 × 19,404.47
  4. Step 4: Simplify right side
    69,325.67x = 2,017,891,369.19
  5. Step 5: Solve for x
    x = 2,017,891,369.19/69,325.67
  6. Step 6: Final answer
    x = 29,107.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.